Config file was modified at FER live system.
Content of COMPONENTS/XHOTELS/RPAC changed from
<RPAC>
<SERVICE_URI>http://rpac.app.xres.rz1.xtrav.de/FER</SERVICE_URI>
<STOREDIR>/var/xres/import/hotel/rpac_offers</STOREDIR>
</RPAC>
to
<RPAC>
<SERVICE_URI>http://rpac.app.xres.rz1.xtrav.de</SERVICE_URI>
<CUSTOMER>FER</CUSTOMER>
</RPAC>
Responsible: GIV.